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Lift capacity of a belly pump?

B

BigTone

Member
Could you guys tell me the lift capacity of the belly pump on a Farmall M?

Im looking to pick up a 6', 6.5', or 7' box scraper and they seem to run from 350-550 lbs.
 
The pimp is not the lift factor it is the size of cylinder. The belly pump if I remember right on that tractor puts out around 1200PSI so you need a bigger diameter cylinder to get as much lift as you would if the system was say a 2500psi system Either system will lift the same weight if you use the correct size cylinder for the PSI you have
 
I would think you should be able to lift 350lbs pretty easily. I have lifted some pretty heavy stuff with my tractors that have Lift-Alls. Most of what I lift is of unknown weight, but for refference, a big block Chevy with auto trans attached is around 700lbs, and I lifted that with no trouble at all.
 
In addition to the cylinder diameter, the mechanical leverage of the machine involved will matter. A front end loader no doubt has different leverage than a box scraper, or a disc or a plow. However, a scraper should not be a problem for it with a 3 or 3 1/2" cylinder.
 

I've seen a Farmall H with a #31 front loader pick up a 1,500 pound large round bale of hay. That same H also was used on occasion to pull a John Deere 495 corn planter, fully loaded with dry fertilizer hoppers and insecticide hoppers. Don't remember right now how much fertilizer each of the 2 hoppers held, but it took several 50 pound bags to fill each one.
 
The lift cylinder diameter is the factor. Remember the hydraulic system is works because you get a mechanical advantage, the displacement in your pump will equal the displacement in the lift cylinder, the larger the lift cylinder the less movement you get for each cubic inch/centimeter, ounce or liter of fluid you pump, that's where your advantage (leverage) comes from.
 
pump pressure is 600ish for earrly to 800psi ish for the late ones. They can get over 1000psi if you mess with the spring.

dont forget: Force = pressure of the pump * area of the piston surface

Andrew
 
(quoted from post at 14:03:18 05/07/12) The lift cylinder diameter is the factor. Remember the hydraulic system is works because you get a mechanical advantage, the displacement in your pump will equal the displacement in the lift cylinder, the larger the lift cylinder the less movement you get for each cubic inch/centimeter, ounce or liter of fluid you pump, that's where your advantage (leverage) comes from.
Click to expand...
Every machine is designed different. By mechanical leverage I mean that most machines do not lift or pull straight up or down. They have leverage built into the design, either by simply pushing/pulling at an angle, as in a front end loader, or by compound leverage in the way the cylinder lifts the machine, as in the bucket of a loader where the bucket itself is attached to a secondary arm at a different place than the cylinder, thereby compounding the force.
After working in an experimental hydraulics labratory for 25 years, I had to learn a little something about "leverage" in using a cylinder to move an object. "Bellcranks" are another place... one side of the crank is 6" long and the other is 8" long... it changes how much pressure and/or force it takes and how much movement you get from side to side. Many machines use different angles and different lengths of linkage, which changes the force required to move it.
 
Excluding rustyfarmalls, you have a bunch of complicated answers -- I don't see any problem lifting that much (or little).
 
I had to move a 14 ft. disk with 20 in. blades and I hooked it up to a farmall H and it had no trouble picking up the disk. If I had to put it in the ground it might of been another story.

Bob
 
I thought the belly pumps would put out about 700 PSI stock, or 900 PSI with the IH pressure kit. My live hydraulic puts out 1800 PSI.
 
Hey ! My answer wasnt complicated either ! lol....Just try it, then you will know for sure. The Lift-All may well suprise you!
 
I apologize for getting carried away, but I have seen home made stuff where the leverage built into the lift mechanics of the machine was so bad a 4" cylinder @ 2000psi would not lift something a 3" @1500 should have easily handled.
 
thanks guys, I just needed some reassurance that if i spent $800-$1000 on a box scraper that I wasnt going to be wasteing my cash. thanks for the help once again.
 
As I said if I remember right so what I remember may or may not be the correct PSI but either way it comes out that it has to do with the diameter of the cylinder and the PSI as to how much something will lift.
 
Sorry, I just scanned the answers, I noticed yours after I posted, should have edited my response.
 
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